1. if length of one side of cube is 20 cm, then volume of cube must be:

a. 4000 cm^3
b. 8000 cm^3
c. 800 cm^3
d. 6000 cm^3

2. the volume of a cube is 64 cm^3 . what is the length of one side?

a. 6 cm
b. 8 cm
c. none of these.
d. 2 cm

2. c. None of these

1. b. 8000 cm.³

Step-by-step explanation:

2.

Unfortunately, we do not have an answer choice of , so we leave it as "None of these".

1.

* All edges\sides of a square\square prism [cube] are congruent, so you take the cube root of 64 to get the length of each edge.

I am joyous to assist you anytime.

35°, 55°, 90°

Step-by-step explanation:

Since all the angles of a triangle equal 180, add them all together and set them equal to 180.

(x-5)+(x+15)+(2x+10)=180

Now solve for each angle.

(40-5)

=35°

(40+15)

=55°

(2(40)+10)

=90°

Now check your work.

35°+55°+90°

=180°